Box-covering machine and the like.



c; B. PEARSALL. BOX COVERING MACHINE AND THE LIKE.

APPLICATlON FILED JULY 28.1917.

1,302,587.. Patented May 6, 1919.

2 SHEETS-SHEET I C. B. PEARSALL.

BOX COVERING MACHINE AND THE LIKE.

APPLICATION FILED JULY 28.19.

Patented May 6, 1919.

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CHESTER B. PEARSALL, OF ROCHESTER, NEW YORK, ASSIGNOR TO M. D. KNOWLTGNCOMPANY, OF ROCHESTER, NEW YORK, A CORPORATION OF NEW YORK.

BOX-COVERING MACHINE AND THE LIKE.

To all whom it may 0072007 72:

Be it known that I, CHESTER B. PEARSALL, a citizen of the United States,and resident of Rochester, in the county of Monroe and State of NewYork, have invented certain new and useful Improvements in Box-CoveringMachines and the like, of which the following is aspecification.

This invention relates to box covering machines of the class in which acontinuous strip of covering material is fed from a roll or other sourceof supply to the point where it is to be applied to the box and therecut by a suitable cutting device into desired lengths for the boxes tobe covered. The cutting device, which comprises a pair of knives betweenwhich the covering strip is led in its passage from the roll to the box,is located just at the rear of the box support and in a position wherethe operator may grasp the cut end of the main covering strip followingeach box covering operation and draw a sufficient length of stripforward to effect the next covering operation. This cut end of the maincovering strip normally rests upon the lower knife, in which position itis somewhat inconvenient for the operator to readily grasp. Therefore,it has been the object of the present invention to provide means forlifting thecut end of the main strip from the lower knife after eachcutting operation and holding the same free and in a position to beconveniently orasperl bv the operator. This object is attained by meansof a device which, in the form of my invention illustrated in theaccompanying drawings, comprises a lifting member which is positionedjust at the rear of the lower knife of the cutting device for engagementwith the covering strip at its under side and which is operative to liftthe cut end of said strip above the lower knife upon the raising of theupper knife following the strip cutting operation.

Referring to the accompanying draw ings- Figure 1 is a side elevation ofthe front end of a box covering machine provided with my invention.

Fig. 2 is an enlarged detail, in front elevation. of the cutting deviceof said machine, with which the strip lifter of the present invention isdirectly associated.

Fig. 3 is a sectional detail showing the lowered and raised positions ofthe upper Specification of Letters Patent.

Patented May 6, 1919.

Application filed July 28, 1917. Serial No. 183,246.

knife and the strip lifter, by full and dotted lines respectively.

Similar reference charaotersindicate like parts in the several figuresof the drawings.

The covering machine here shown and to which I have applied the striplifter constituting the present invention, is substair tially the sameas that disclosed in Letters Patent No. 1,037,154, granted August 271912, to which reference may be made for any desired details ofconstruction and operation not entering into the present inven tion.

The machine as shown comprises a frame A, on which is supported theusual elements of a box covering machine, including a cutting device C,and a box support D.

The cutting device comprises a lower stationary frame 2 provided with aknife 3, and an upper movable frame 4t provided with a knife 5, thelatter being adapted upon its descent to cooperate with the knife 3 toout the covering strip or web S transversely. The movable knife frame 1may be operated in any suitable or desired way. In the present case itis made to descend by depressing a treadle, which is not shown in thedrawings but which is connected to the link 6. The link 6 thus pulleddownwardly, sets in rotation. a cam shaft carrying a cam which controlsthe movement of a rod 7. The cam and cam shaft just referred to do notshow in the drawings, but at a point during the rotation of said cam therod 7 is permitted to descend, thus swinging a connected rock arm 8about its pivotalconnection 9. The rock arm 8 is provided with a seriesof teeth 10 which mesh with a corresponding series of teeth 11associated with a rock shaft 12. The rock shaft 12 is operativelyconnected with the upper movable knife frame 1, and it is thereforeobvious that When the rod 7 is permitted to lower, the connected frame4% with its knife 5 will doscend by gravity. When the rod 7 is againlifted, the frame 4 is raised and again as sumes its normal openposition shown in Fig. 1. This construction and operation of cuttingdevice is well known in the art and is the same as that of the aforesaidpatent.

The strip lifter of the present invention comprises a member 14c whichis supported in a position substantially parallel with and to the rearof the knives of the cutting device, whereby it may be caused to engagewith the under side of the main covering strip just to the rear of itscut end. This lifter men'iber may be made operative in any desired wayto erform its function of freeing or moving t 1e cut end of the stripfrom the lower knife. As here shown, it is supported at its oppositeends by two bracket arms 15, 15, which are rigidly attached to the rockshaft 12 which carries the upper knife frame 4;, whereby the liftermember will be caused to move up and down in unison with the upperknife. Thus, when the upper knife is depressed to sever the strip, theconnected lifter member is moved below the path of said strip, as shownby full lines in Fig. 3, and subsequently, when the knife 5 is raised toits open position following the cutting operation, the lifter member is-like wise raised and caused to move the cut end of the strip above thelower knife, as shown by dotted lines in Fig. 3, in which position saidend may be readily and conveniently grasped by the operator when it isdesired to draw the strip forward to provide the necessary length forthe covering of the next box.

Although the strip lifter has been here shown and described inconnection with the cutting device of a box covering machine, it will beobvious that it may be used to the same advantage in connection with acutting device in most any type of machine in which the cut end of astrip of material is adapted to be grasped. by the operator for thepurpose of advancing the strip through the machine.

What I claim is:

1. In combination with a cutting device comprising two cooperatingcutters one of which is movable relative to the other. a deviceoperative to move the cut end of a strip away from one of the cuttersupon the opening of the other following the cutting operation, saiddevice being associated and movable with the movable cutter.

2. In combination with a cutting device comprising two cooperatingcutters one of which is movable and the other stationary, a deviceoperative to move the cut end of a strip away from the stationary cutterupon the opening of the movable cutter, said device being associated andmovable with the movable cutter.

3. In combination with a cutting device comprising two coiiperatingcutters one of which is vertically movable and the other stationary, alifter device operative to lift the cut end of a strip above thestationary cutter upon the raising of the movable cutter, said lifterdevice being associated and movable with the movable cutter.

4. In combination with a cutting device comprising a lower cutter and anupper cutter one of which is movable vertically relative to the other, adevice operative to move the cut end of a strip away from one of saidcutters upon the opening movement of the other following the cuttingoperation, and means for so operating sai d device.

5. In combination with a cutting device comprising two cooperatingcutters one of which is movable relative to the other, a deviceconnected to and movable with said movable cutter and operative upon theopening of the latter to free the cut end of a strip from engagementwith the other cutter.

6. In combination with a cutting device comprising a lower cutter and anupper movable cutter, a lifter device connected to and movable with saidupper cutter and operative upon the opening movement of the latter tomove the cut end of a strip above the lower cutter.

7. In combination with a cutting device comprising a lower cutter and anupper movablecutter, a lifter device associated with the upper cutterfor movement therewith and being arranged to move below the path of thestrip when the upper cutter is depressed to cutting position, and toengage the cut end of the sheet and lift the same above the lower cutterupon the raising of the upper cutter to open position. I

8. In a box covering machine, the combination with the cutting devicecomprising a lower stationary cutter and an upper movable cutter, of alifter device associated with the upper cutter for movement therewithand being operative upon the raising of said upper cutter to lift thecut end of a strip to a raised position between the open cutters.

Signed at Rochester, in the county of Monroe and State of New York, this21st day of July, A. D. 1917.

CHESTER B. PEARSALL.

Witnesses:

TI-IOS. D. PATTON, H. W. SPEARES.

Copies of this patent may be obtained for five cents each, by addressingthe Commissioner of Patents, Washington, D. G.

